Migrate CLI E2E tests to Node.js 26

Run the CLI subprocess suites and benchmark tools as native TypeScript with
node:test, and move them under test/e2e-cli.

Update CI and Compose runners, run local smoke tests on Linux, macOS, and
Windows, and collect source-mapped CLI coverage with c8.

eslint.config.mjs

@@ -48,7 +48,7 @@ export default defineConfig([
         "test/**",
         "**/test/**",
         "src/apps/_test/**",
-        "src/apps/cli/testdeno/**",
+        "test/e2e-cli/**",
         "**/*.test.ts",
         "**/*.unit.spec.ts",
         "**/test.ts",